.

wcfs/xxx.go

-package main
-
-/*
-	conn.objmu.Lock()		// XXX -> rlock
-	objentry := conn.objtab[oid]
-
-	// someone else is already loading the object.
-	// we have to wait for that someone to finish the load.
-	if load, ok := objentry.(*loadInProgress); ok {
-		conn.objmu.Unlock()
-		select {
-		case <-ctx.Done():
-			return nil, ctx.Err()	// XXX err ctx
-		case <-load.ready:
-			// XXX check pyclass match
-			return load.pyobj, load.err
-		}
-	}
-
-	// noone else is loading the object. Investigate whether it is simply not
-	// in objtab, or it is lost weakref, and if so we have to initiate the load.
-	var xobj interface{}
-	if objentry != nil {
-		wobj := objentry.(*WeakRef)
-		xobj = wobj.Get()
-	}
-	if xpyobj != nil {
-		// the object is already there
-		conn.objmu.Unlock()
-		return xpyobj, nil	// XXX + activate?
-	}
-
-	// the object is not there, we have to (re)load it.
-	load := &loadInProgress{ready: make(chan struct)}
-	conn.objTab[oid] = load
-	conn.objmu.Unlock()
-
-	pyobj, err = conn.loadpy(ctx, oid)
-	load.pyobj = pyobj
-	load.err   = err
-	close(load.ready)
-
-	// replace objtab entry with WeakRef
-	conn.objmu.Lock()
-	defer conn.objmu.Unlock()
-	if x := conn.objtab[oid]; x != load {
-		panic(fmt.Sprintf("zodb.Conn: objtab[%s]: load finished, but it is: %#v", oid, x)
-	}
-	if err != nil {
-		// it was loading error - remove the entry not to cause uncontrolled objtab growth.
-		// if this object is accessed next time - the load will be retried.
-		delete(conn.objtab[oid])
-	} else {
-		conn.objtab[oid] = NewWeakRef(pyobj)
-	}
-*/
-
-/*
-{
-	objentry := conn.objtab[oid]
-
-	// someone else is already loading the object.
-	// we have to wait for that someone to finish the load.
-	if load, ok := objentry.(*loadInProgress); ok {
-		conn.objmu.Unlock()
-		select {
-		case <-ctx.Done():
-			return nil, ctx.Err()	// XXX err ctx
-		case <-load.ready:
-			// XXX check pyclass match
-			return load.pyobj, err
-		}
-	}
-
-	// noone else is loading the object. Investigate whether it is simply not
-	// in objtab, or it is lost weakref, and if so we have to initiate the load.
-	var xobj interface{}
-	if objentry != nil {
-		wobj := objentry.(*WeakRef)
-		xobj = wobj.Get()
-	}
-	if xpyobj != nil {
-		// the object is already there
-		conn.objmu.Unlock()
-		return xpyobj, nil	// XXX + activate?
-	}
-
-	// the object is not there, we have to (re)load it.
-	load := &loadInProgress{ready: make(chan struct)}
-	conn.objTab[oid] = load
-	conn.objmu.Unlock()
-
-	pyobj, err = conn.loadpy(ctx, oid)
-	load.pyobj = pyobj
-	load.err   = err
-	close(load.ready)
-
-	// replace objtab entry with WeakRef
-	conn.objmu.Lock()
-	defer conn.objmu.Unlock()
-	if x := conn.objtab[oid]; x != load {
-		panic(fmt.Sprintf("zodb.Conn: objtab[%s]: load finished, but it is: %#v", oid, x)
-	}
-	if err != nil {
-		// it was loading error - remove the entry not to cause uncontrolled objtab growth.
-		// if this object is accessed next time - the load will be retried.
-		delete(conn.objtab[oid])
-	} else {
-		conn.objtab[oid] = NewWeakRef(pyobj)
-	}
-}
-*/